K&N air filters for my 2015 Genesis 5.0

[carguy75]

Manufacturers typically brag a bit about their products. K&N states this on the Amazon page where I located their air filter for my G80. For $62, I'll skip the extra 1-4 HP.

Designed to Increase Horsepower with up to 50% More Airflow

K&N automotive OE (original equipment) replacement air filters generally add 1 to 4 horsepower, due to the unique characteristics of our filter media.

Well K&N is smart to quote power gains on the low end of possible gains to avoid potential legal reprisal if a 1992 Ford Escort owner installed a K&N performance filter and gained about 2hp on a dyno if K&N would have stated higher hp numbers based on more powerful engines.

The statement is very broad and cover all the cars/trucks that K&N provide filters for which uses old and newer engine designs that would make it hard to provide accurate gains unless they provided individual dyno proven test results for each car. However, even doing that would be tricky due to how dyno calibration vary from shop to shop so the numbers will still vary and open K&N for legal action if the numbers fall short.

This modern G37 gained more than 4hp to the wheels with dual K&N panel filters on this dyno test. So this customer got his money worth and some extra hp over the claimed results of 4hp.

However, I am sure those gains are not typical for every car that has an K&N filter installed. Yet, I bet the 5.0 V8 gains with dual K&N filters are close if not more. Cannot prove it though without spending more money than what I paid for the filters to rent dyno time, so a dyno comparison is not going to happen on my thread.

 

[Great White]

Newbie here -- just to be clear, don't do this on a 3,8, correct?

 

[inmanlanier]

You are fine putting in a K&N air filter in any vehicle you wish to do it to. This will not void your warranty. I do it primarily to save money (oiling filters every 50K miles vs. replacing every 15K miles), with a slight convenience benefit also (twice every 100K miles vs. 6 times). There is the also the added power gains (albeit many of us think small).

I've still got the same spray can of their oil after Lord knows how many years (25?). I've oiled many a K&N in maintemance of all vehicles in our family.

 

[carguy75]

Newbie here -- just to be clear, don't do this on a 3,8, correct?

Why would you feel or question that an owner should not use a K&N performance filter specifically on the 3.8 engine based on this thread?

 

[Great White]

You are fine putting in a K&N air filter in any vehicle you wish to do it to. This will not void your warranty. I do it primarily to save money (oiling filters every 50K miles vs. replacing every 15K miles), with a slight convenience benefit also (twice every 100K miles vs. 6 times). There is the also the added power gains (albeit many of us think small).

I've still got the same spray can of their oil after Lord knows how many years (25?). I've oiled many a K&N in maintemance of all vehicles in our family.

Ok thank you!

 

[Great White]

Because I’m an Id10t.

I wasn’t sure, based on this comment, if the 3.8U was different from a 5.0U, in that, the 3.8U might use a hot wire MAF sensor.

“I forgot to add, the 5.0 V8 do not have a hot wireMAF sensor( uses a MAP sensor) for the oil in the K&N filter to mess up.”

 

[TheBeginning]

Not sure if anyone mentioned it, but it would be interesting to compare MAP values for both filters. Less restriction by the K&N filter should result in a measurable increase in manifold pressure. That’s where the power gains come from. Higher manifold pressure pushes more air into the cylinders allowing more fuel to be added aaand you get the idea. Wether that pressure translates into hp is anyone’s guess. I think it would be interesting because it could tell us if the current dual air box is fully utilized. Clearly the K&Ns flow better, but if the car gets all the air it needs from two factory filters then K&Ns are a waste of money.

If anyone runs this experiment please let us know the results. Also, be extremely careful to replicate the same conditions on both tests. Intake air temp, speed, rpm, throttle position and many other factors can affect MAP values.

 

[carguy75]

Not sure if anyone mentioned it, but it would be interesting to compare MAP values for both filters. Less restriction by the K&N filter should result in a measurable increase in manifold pressure. That’s where the power gains come from. Higher manifold pressure pushes more air into the cylinders allowing more fuel to be added aaand you get the idea. Wether that pressure translates into hp is anyone’s guess. I think it would be interesting because it could tell us if the current dual air box is fully utilized. Clearly the K&Ns flow better, but if the car gets all the air it needs from two factory filters then K&Ns are a waste of money.

If anyone runs this experiment please let us know the results. Also, be extremely careful to replicate the same conditions on both tests. Intake air temp, speed, rpm, throttle position and many other factors can affect MAP values.

LOL. You can perform the same experiment yourself to ensure it was done to your standards..